Canon iR5570 Series, Service Manual

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Chapter 3
3-6
F-3-6
*1: After a shift to standby, the fixing target temperature is decreased in 5-deg C increments at specific time intervals. When a specific temperature is
reached, the fixing heater and the fixing motor are turned on and off to maintain the temperature.
T-3-4
3.2.4 Basic Sequence of Operation (at time of copying/printing)
0009-6338
Interval Description
WMUPR (warm-up) From when the main power is turned on until the fixing roller
temperature reaches a
specific level, the potential control of the photosensitive drum ends,
and as much as 60
sec passes from power-on.
CNTR (control rotation) The machine executes potential control of the photosensitive drum.
For each mode (i.e.,
copier, printer), it executes VD control (to adjust the primary discharge
current) and VL
control (to adjust the laser output) and determines Vdc (developing
bias).
PSTBY (print standby) The machine is in a state in which it is ready to accept a copy/print
request signal.
CNTR
WMUPR PSTBY
*1
Main power
switch ON
Main motor
(M2)
Drum motor
(M1)
Primary charging
Pre-exposure
LED (LED1)
Developing clutch
(CL1)
Developing bias
(DC)
Developing bias
(AC)
Pre-transfer
charging (DC)
Pre-transfer
charging (AC)
Separation
charging (DC)
Separation
charging (AC)
Fixing motor
(M3)
Fixing heater
(IH)
Laser
Transfer charging
Bias roller
60 sec (approx.)
205 deg C